Update README to talk about Maven.
Update README to talk about Maven.

DigiByte-Team/digibytej-alice,patricklodder/libdohj,TrustPlus/trustpluscoinj,Coinomi/bitcoinj,Qw0kka/creditsj,yezune/darkcoinj,devrandom/bitcoinj,Kefkius/groestlcoinj,AugieMillares/bitcoinj,reddcoin-project/reddcoinj-pow,bitbandi/spreadcoinj,stonecoldpat/bitcoinj,szdx/bitcoinj,peacekeeper/bitcoinj,you21979/bitcoinj,HashEngineering/infinitecoinj,veritaseum/bitcoinj,stonecoldpat/bitcoinj,strawpay/bitcoinj,techsubodh/admin_tracker,yezune/darkcoinj,MintcoinCommunity/mintcoinj,natzei/bitcoinj,marctrem/bitcoinj,fsb4000/bitcoinj,oscarguindzberg/bitcoinj,HashEngineering/darkcoinj,HashEngineering/megacoinj,TrustPlus/trustpluscoinj,DigiByte-Team/digibytej-alice,keremhd/mintcoinj,HashEngineering/namecoinj,DynamicCoinOrg/dmcJ,stafur/trustpluscoinj,HashEngineering/dashj,ahmedbodi/anycoinj,blockchain/bitcoinj,RaviAjaibSingh/bitcoinj,Kefkius/groestlcoinj,dldinternet/bitcoinj,HashEngineering/megacoinj,HashEngineering/mobilecashj,kurtwalker/bitcoinj,schildbach/bitcoinj,natzei/bitcoinj,funkshelper/bitcoinj,tangyves/bitcoinj,ahmedbodi/anycoinj,HashEngineering/digitalcoinj,dalbelap/bitcoinj,Enigmachine/btcjwork2,HashEngineering/maxcoinj,HashEngineering/myriadcoinj,bitcoin-solutions/bitcoinj-alice,veritaseum/bitcoinj,hank/litecoinj,devrandom/bitcoinj,bitsquare/bitcoinj,DigiByte-Team/digibytej-alice,yenliangl/bitcoinj,langerhans/dogecoinj-alice,peterdettman/bitcoinj,MintcoinCommunity/mintcoinj,HashEngineering/frankoj,designsters/android-fork-bitcoinj,coinspark/sparkbit-bitcoinj,jdojff/bitcoinj,techsubodh/admin_tracker,HashEngineering/maxcoinj,bankonme/monetaryunitj,ligi/bitcoinj,danielmcclure/bitcoinj,RobKohr/bitcoinj,cpacia/bitcoinj,yezune/darkcoinj,pelle/bitcoinj,TheBlueMatt/bitcoinj,devrandom/bitcoinj,veritaseum/bitcoinj,stafur/trustpluscoinj,framewr/bitcoinj,oscarguindzberg/bitcoinj,jjculber/defcoinj,PeterNSteinmetz/peternsteinmetz-bitcoinj,HashEngineering/unobtaniumj,kris-davison/non-working-darkcoinj-fork,greenaddress/bitcoinj,cannabiscoindev/cannabiscoinj,kurtwalker/bitcoinj,HashEngineering/dashj,GroestlCoin/groestlcoinj,cbeams/bitcoinj,bitcoin-solutions/bitcoinj-alice,RobKohr/bitcoinj,Coinomi/bitcoinj,fsb4000/bitcoinj,fsb4000/bitcoinj,HashEngineering/dimecoinj,Kangmo/bitcoinj,bitbandi/spreadcoinj,MonetaryUnit/monetaryunitj,tjth/bitcoinj-lotterycoin,cpacia/bitcoinj,FTraian/bitcoinj-uc,HashEngineering/myriadcoinj,jdojff/bitcoinj,patricklodder/bitcoinj,cannabiscoindev/cannabiscoinj,HashEngineering/dimecoinj,HashEngineering/maxcoinj,habibmasuro/litecoinj,yezune/darkcoinj,reddcoin-project/reddcoinj-pow,HashEngineering/quarkcoinj,HashEngineering/digitalcoinj,stafur/trustpluscoinj,MintcoinCommunity/mintcoinj,imsaguy/bitcoinj,HashEngineering/digitalcoinj,janko33bd/bitcoinj,bankonme/monetaryunitj,UberPay/bitcoinj,akonring/bitcoinj_generous,monapu/monacoinj-multibit,lavajumper/bitcoinj-scrypt,haxwell/bitcoinj,VegasCoin/vegascoinj,paulminer/bitcoinj,Rimbit/rimbitj,jife94/bitcoinj,patricklodder/bitcoinj,dcw312/bitcoinj,HashEngineering/maxcoinj,habibmasuro/smileycoinj,HashEngineering/unobtaniumj,HashEngineering/mobilecashj,HashEngineering/dashj,haxwell/bitcoinj,praus/multicoinj,bitcoin-solutions/bitcoinj-alice,MikeHuntington/blackcoinj-new,bitbandi/spreadcoinj,kmels/bitcoinj,bitbandi/spreadcoinj,jife94/bitcoinj,meeh420/anoncoinj,dogecoin/libdohj,yenliangl/bitcoinj,kurtwalker/bitcoinj,Crypto-Expert/digitalcoinj,ahmedbodi/anycoinj,HashEngineering/digitalcoinj-mb,tangyves/bitcoinj,langerhans/bitcoinj-alice-hd,TrustPlus/trustpluscoinj,patricklodder/libdohj,wpstudio/blazecoinj,GroestlCoin/groestlcoinj,rnicoll/libdohj,bitcoinj/bitcoinj,Coinomi/bitcoinj,HashEngineering/dashj,nikileshsa/bitcoinj,HashEngineering/darkcoinj,rnicoll/altcoinj,you21979/bitcoinj,HashEngineering/quarkcoinj,HashEngineering/groestlcoinj,TheBlueMatt/bitcoinj,bankonme/monetaryunitj,novitski/bitcoinj,patricklodder/libdohj,tjth/bitcoinj-lotterycoin,troggy/bitcoinj,TheBlueMatt/bitcoinj,Kefkius/groestlcoinj,lavajumper/bitcoinj-scrypt,HashEngineering/megacoinj,techsubodh/admin_tracker,rnicoll/bitcoinj,stonecoldpat/bitcoinj,bitbandi/spreadcoinj,HashEngineering/mobilecashj,habibmasuro/smileycoinj,tangyves/bitcoinj,MonetaryUnit/monetaryunitj,cannabiscoindev/cannabiscoinj,reddcoin-project/reddcoinj-pow,VishalRao/bitcoinj,tjth/bitcoinj-lotterycoin,VegasCoin/vegascoinj,HashEngineering/frankoj,kmels/bitcoinj,GroestlCoin/groestlcoinj,HashEngineering/maxcoinj,FTraian/bitcoinj-uc,HashEngineering/groestlcoinj,mrosseel/bitcoinj-old,sserrano44/bitcoinj-watcher-service,lavajumper/bitcoinj-scrypt,cannabiscoindev/cannabiscoinj,HashEngineering/unobtaniumj,janko33bd/bitcoinj,HashEngineering/dimecoinj,peterdettman/bitcoinj,HashEngineering/namecoinj,HashEngineering/namecoinj,HashEngineering/myriadcoinj,patricklodder/bitcoinj,HashEngineering/quarkcoinj,MonetaryUnit/monetaryunitj,hughneale/bitcoinj,bitcoinj/bitcoinj,paulmadore/woodcoinj,MrDunne/bitcoinj,Kefkius/groestlcoinj,habibmasuro/smileycoinj,you21979/bitcoinj,ohac/sha1coinj,HashEngineering/darkcoinj,therightwaystudio/fork_bitcoinj,FTraian/bitcoinj-uc,kris-davison/non-working-darkcoinj-fork,jife94/bitcoinj,kris-davison/non-working-darkcoinj-fork,hank/feathercoinj,HashEngineering/frankoj,imzhuli/bitcoinj,cpacia/bitcoinj,dexX7/bitcoinj,rootstock/bitcoinj,HashEngineering/groestlcoinj,haxwell/bitcoinj,Kefkius/groestlcoinj,schildbach/bitcoinj,VegasCoin/vegascoinj,hank/litecoinj-new,stafur/trustpluscoinj,HashEngineering/anycoinj,jdojff/bitcoinj,langerhans/dogecoinj-new